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Device won't go to sleep, hibernate or shutdown

I'm having some serious issues with my Chuwi Hi12 dual boot device. I've owned the device for two months now and it was working o.k. during this time.
Recently I've noticed that my tablet will drain during the night. After some further inspection I've noticed that the device won't go to sleep, won't hibernate and when I try to shut the device down I get a black screen. When I wish to turn it back on I need to long press the power buton several times until it turns back on. i do notice that the power light on the keyboard is constantly on when I "shutdown" the device.

I've Googled this issue but couldn't find anything about it. Updated my Windows with all the latest updates and tried to boot the device several times. Checked the power managment settings and nothing has changed. All looks good.

I'm sorry Motobot I find it hard to believe that the ONLY option to our problem is shutting down the device on each and every time we would like to close it. In addition, in my case, even shutting down the device won't work every time.

Settings:
Save me power when my device knows I'm away is OFF.
Network Connection NEVER DISCONNECT
Sleep After 4 & 10 minutes
Hibernate Never
Power Buttons & Lid:
all set to Sleep

I shut it down with the Power icon on the Windows Start Menu, but sleep seems to work OK when i click it. Admittedly, it does not go into a particularly low power sleep state(not disconnecting Wifi probably does not help) and I don't often leave it in sleep unless plugged in, but it comes back out at a press of the power button, and a screen click or re-entry of PIN depending on how long it's in sleep mode. Like I said, sleep mode is not really what I'd consider a particularly deep or low powered sleep mode.

I had similar issues a few months back prior to Creators Update when I was on one of the slow ring updates. I was constantly getting nowhere from the OS selection screen and having to hold for 15-20 seconds then three press to start up, etc. EVERY time. Eventually an update seemed to get me past that issue. My Hi12 (Z-8300) now sleeps when its left alone long enough, or when power is briefly pressed. It boots right from the OS selection screen into the OS selected or the previously ran OS, rather than requiring the Long Press/Three Press Tango. Beats me exactly what was messed up at the time, figured it was just an update bug. Should have run DISM I guess, but it wasn't that way for more than a week or so... Minor enough to do the TANGO once I knew it wasn't a brick.